Tie rod and anchor bolt combination with external anchor point



4, 1964 R. KORT ETAL 3,142,883

TIE ROD AND ANCHOR BOLT COMBINATION WITH EXTERNAL ANCHOR POINT Filed June 22, 1962 5 Sheets-Sheet 1 INVENTORS:

KORT BYRON E. RUTH BY%%WM ATT'Y g- 4, 1964 R. KORT ETAL 3,142,883

TIE ROD AND ANCHOR sour comammxow wrm EXTERNAL ANCHOR POINT Filed June 22, 1962 3 Sheets-Sheet 2 INVENTORS. ROMAN KORT BYRON E. RUTH BY ATT Y Aug. 4, 1964 R. KORT ETAL 3,142,883

TIE ROD AND ANCHOR BOLT COMBINATION WITH EXTERNAL ANCHOR POINT Filed June 22, 1962 3 Sheets-Sheet 3 FIG. 5

6? ROMAN K BYRON .RUTH

ATT'Y United States Patent 3,142,383 TE RUB AND ANCHOR BOLT (IQMBHYATIQN WITH EXTERNAL ANCHGR POINT Roman Kort, River Forest, El, and Byron E. Ruth, Morgantown, W. Va, assignors to Symons Mfg. Company, Des Plaines, Ill., a corporation of Delaware Filed .lune 22, 1962, Ser. No. 204,364 '7 Claims. (Cl. 25-131) The present invention relates generally to concrete wall form hardware and has particular reference to an im proved tie rod and anchor bolt combination, the anchor bolt making provision for connection to the tie rod at a point which is outwardly offset with respect to the confines of the gang form section with which the combination is used.

The improved tie rod and anchor bolt combination comprising the present invention has been designed for use primarily in connection with a gang form section or installation wherein a large number of wall form panel units in preassembled edge-to-edge relationship may be handled as a unit in connection with large concrete installations. The invention is, however, capable of other uses and a tie rod and anchor bolt combination constructed in accordance with the principles of the invention may, with or without modification, be employed for tie rod anchoring purposes in individual situations wherever two adjacent panel units are to be secured together in edge-to-edge relation by combined spreader and tie rod assemblies. Irrespective of the particular use to which the present invention may be put, the essential features thereof remain substantially the same.

A gang form installation in itself is not novel and the preassembly of a plurality of panel units for hoisting bodily into place is frequently resorted to as a labor-saving expedient, both from the standpoint of actual labor performed and of time consumed in effecting the proper positioning of the section or installation. For example, the panel units may be preassembled to produce a gang of such units on the ground with considerably less effort than is required to assemble them in their final position in the concrete wall form installation. Thereafter, the thus formed gang may be erected or hoisted into position in the form by the use of an overhead crane or hoist at the scene of installation. It is possible then to reuse the gangs in a subsequent installation, either in their original assembled condition, or they may be modified by the addition or subtraction of one or more panels.

The advantages of both time and labor saved when resorting to gang-forming operations, as outlined above, has not been without its limitations. One limitation has been the difficulty which is encountered in stripping the gang form sections from the hardened concrete wall or other structure. This difiiculty is particularly prevalent where prefabricated panel units having marginal steel frames are employed.

By way of explanation, it is pointed out that the present tie rod and anchor bolt combination has been designed for use especially in connection with panel units which are commonly known as Steel-Ply panel units and are manufactured and sold by Symons Mfg. Company of Des Plaines, Illinois. Such panel units have been illustrated and described in United States Patent No. 2,997,769, granted on August 29, 1961 and entitled Tie Rod Assembly'for Concrete Wall Form Panels. Steel-Ply panel units, as depicted in such patent, are adapted to be reused, as is hardware that is associated therewith exclusive, of course, of the tie rods, certain portions of which remain embedded in the hardened concrete of the wall or other structure undergoing construction. They are presassembled at the factory rather than in the field and include rectangular plywood facings which are reinforced by rectangular frames in the form of vertical and horizontal marginal members and any intermediate crossbars which may be desired. The marginal frame members are of shallow channel shape in cross section with the channels opening outwardly of the panel units so that, when adjacent panel units are brought together in their proper edge-to-edge relationship, narrow voids or spaces are created between abutting marginal frame members. The side ribs of the channel-shaped frame members are notched at spaced regions therealong so that the looped or apertured ends of tie rods may be inserted through registering notches and the tie rod ends captured and anchored Within the voids by the passage of conventional wedge bolts transversely through registering openings in the webs of the frame members, as well as through the tie rod ends. Thereafter, wedges are passed through slots in the shank portions of the bolts and the various parts are thus locked in position. The tie rods, of course, function as ties to prevent the opposed form walls from bulging under the influence of the wet concrete, while the wedge and bolt assemblies cooperate to draw adjacent panel units tightly in their proper edge-to-edge relationship and hold them against separation.

After the concrete has been poured between the forms and allowed to harden and, after the forms have been removed from the concrete wall or other structure following withdrawal of the wedge and bolt assemblies, the central portions of the tie rods remain embedded in the concrete while their ends project outwardly from the opposite sides of the concrete structure. At points near the side faces of the concrete structure, where the tie rods project outwardly, the rods are provided With weakened portions which are known as break-backs and facilitate breaking off of the projecting ends of the rods with the breaks taking place short distances inwards of the side faces of the concrete structure.

When utilizing gang-forming procedure, as heretofore briefly outlined to erect the wall form, considerable difficulty is encountered in stripping the gang form sections from hardened concrete. Concrete seepage into the narrow voids between adjacent marginal frame members through the registering notches in the side ribs of the frame members, and into the openings or apertures in the tie rod ends, as well as around the edges of the slots through which the wedges are driven, create bonds between the gang form sections and the hardened concrete wall or other structure at multiple spaced regions of the sections. Considering, for example, a gang form section having thirty-six panel units arranged in edge-to-edge relation, there may be as many as two hundred such bonds between the gang form section and the concrete structure. Thesebonds must be broken before the section can be freed. Not only does seepage of concrete create a bond at each region of seepage, but also portions of the concrete seepage obstruct withdrawal of the apertured tie rod ends from the registering notches through which the ends of the tie rods pass, frequently presenting a much greater resistance to removal of the gang form section than is created by the concrete bonds alone. Due to the fact that, with conventional tie rods and tie rod bolts, the apertured ends of the tie rods are confined and concealed within the voids between abutting marginal frame members, the tie rod ends are inaccessible for break-off purposes.

The tie rod and anchor bolt combination of the present invention is designed to overcome the above-noted limitations that are attendant upon the use of conventional tie rod bolts in connection with the formation and use of gang form sections and, toward this end, it contemplates the provision of an anchor bolt having a slotted bolt shank portion to accommodate insertion of a wedge therethrough in the usual manner of insertion, and also having a series of outwardly displaced anchor regions for cooperation with one end region of the associated tie rod so that, when the bolt is in position at the meeting edge regions of a pair of adjacent and edge-to-edge panel units, the adjacent end region of the tie rod lies well outside the confines of the panel units and also the void between the abutting frame members. The bolt shank portion functions in the usual manner to draw the adjacent panel units together but, because of the outwardly offset tie rod end, the tie rod end is available for break-back operations after the anchor bolt has been removed preparatory to stripping of the gang form section from the hardened concrete mass. Thus, break-back operations may be performed while the gang section is still in position on the wall and immediately prior to stripping operations. Such break-back operations are made possible because, after the bolt has been knocked from its operative position, the tie rod end which protrudes a few inches beyond the associated abutting frame members is readily available for twisting operations to effect the break-back. With the break-back completed, the problem of a seepage bond is greatly minimized because, during the break-back operation, much of the seepage concrete is fractured and thus loosened while at the same time the tie rod end is removed so that it no longer presents an obstruction to stripping of the gang form section from the hardened concrete wall or other structure.

The provision of a tie rod and anchor bolt combination which will enable the break-back operation to be performed prior to the stripping operation, instead of requiring the stripping operation to be performed first, constitutes one of the principal objects of the present invention.

Another and general object of the invention is to provide a tie rod and anchor bolt combination which retains all of the advantageous features of a conventional tie rod and bolt but may be applied to a pair of adjacent panel units and removed therefrom with equal or superior facility to that required in connection with the installation of a conventional tie rod and bolt.

A further object of the invention is to provide a tie rod and anchor bolt combination wherein there is established between the adjacent end region of the tie rod and the anchor bolt an extremely effective and strong anchor bond which is well beyond the tensile strength of a tie rod.

A still further object of the invention is to provide a tie rod and anchor bolt combination wherein means are provided for guiding the anchor bolt into register with the slots in the marginal frame members of the panel unit so that erection procedure is simplified.

It is a further object of the invention to provide a tie rod and anchor bolt combination wherein, during stripping operations after the bolt section proper of the anchor bolt has been knocked loose from its position of installation, the anchor bolt as a Whole remains captured by the tie rod so that it will not fall to the ground. During such stripping procedure, it is, therefore, unnecessary for an operator to make provisions for retaining the anchor bolt in his grasp while knocking the same loose from its position of installation.

Other objects and advantages of the invention, not at this time enumerated, will be apparent from a consideration of the following detailed description In the accompanying three sheets of drawings forming a part of this specification, one embodiment of the invention has been illustrated in detail.

In these drawings:

FIG. 1 is a perspective view of a gang form section which is designed for use in a concrete wall form and utilizes tie rod and anchor bolt combinations in accordance with the principles of the present invention, and the gang form section being shown as undergoing handling by an overhead crane or hoist;

FIG. 2 is an enlarged perspective view, somewhat sche matic in its representation, of a gang form section in position in a concrete wall form installation and illustrating the manner in which the section may be prepared for stripping operations;

FIG. 3 is a fragmentary side elevational view of a portion of the structure shown in FIG. 2;

FIG. 4 is a further enlarged fragmentary detail perspective view of a portion of the structure shown in FIG. 2 in the vicinity of one of the tie rod and anchor bolt combinations of the present invention;

FIG. 5 is a plan view of one of the anchor bolts of the present invention;

FIG. 6 is a side elevational view of the anchor bolt shown in FIG. 5;

FIG. 7 is an exploded perspective view of one of the tie rod and anchor bolt combinations, showing these parts.

in the relative positions which they assume in an actual installation; and

FIG. 8 is an exploded perspective view similar to FIG. 7 but showing a tie rod and wedge assembly of the type employed for holding the sections of an individual detached gang form assembly in their contiguous relationship prior to application of the gang form assembly in the wall form.

Referring now to the drawings, and in particular to FIG. 1, an overhead hoist 10 forming a part of a crane assembly 12 is shown as being operatively connected in hoisting relation to a gang form section 14 consisting of a group of twelve individual wall form panel units 16- arranged in edge-to-edge relationship. The gang form section 14- is designed for use with other similar gang form sections and is in the nature of a composite unit which is adapted for use in the erection of a concrete wall form assembly, such as has been shown in FIG. 2 wherein front and rear form assemblies 18 and 20 are disposed in spaced parallel relationship preparatory to pouring of Wet concrete into the space 22 between the two assemblies.

No claim is made herein to any novelty associated with the individual panel units 16 per se since these units are conventional Steel-Ply panel units of the type which is shown and described in aforementioned United States Patent No. 2,997,769. Each panel unit is in the form of a rectangular plywood facing 30 having a rectangular steel marginal reinforcing frame applied to the outer face thereof. The frame of each panel unit consists of vertical frame members 32 and horizontal frame members 34. Intermediate horizontal crossbars 36 extend across each panel unit and such crossbars have their ends secured by welding to the opposed faces of the vertical frame members 32. The members 32 are disposed in contiguity at the junctures between the various panel units. The front and rear form assemblies 18 and 20, when in position in the concrete form assembly, are maintained in their spaced apart relationship by means of a requisite number of the special tie rod and anchor bolt combinations of the present invention, these combinations being designated in their entirety by the reference numeral 40 and one of them being clearly shown in detail in FIG. 7. Not only do these combinations serve to maintain the opposed front and rear form assemblies 18 and 20 in their spaced apart relationship for reception therebetween of the poured concrete, but also they assist in holding adjacent panel units on the same side of the concrete wall form assembly in their edge-to-edge relationship after the various gang form sections 14 are in position in the form assembly. Prior to hoisting of the gang form section 14 into position, the section is assembled and the panel units thereof held together by conventional wedge and bolt assemblies, waler members and any waler reinforcing members which may be employed, all in a manner that will be described in detail when gang form erection procedure is subsequently explained.

The tie rod and anchor bolt combinations 40 are designed to cooperate with the special construction of the conventional Steel-Ply". panel units 16, the vertical frame members 32 of which are of shallow channel shape cross section. Each member 32 includes inside and outside out wardly extending marginal ribs 42 and 44 and a connecting web portion 46. A lateral inwardly extending flange 48, which is spaced inwardly a slight distance from the inside edge of each vertical frame member, affords a right angle recess 50 in which the adjacent vertical edge portion of the plywood facing 30 seats. The inside face of each facing is flush with the inside edges of the frame members of the associated reinforcing frame.

The concrete wall form assemblies 18 and 20 are erected by conventional gang-forming operations wherein the gang form sections 14 are assembled upon the ground by bringing pairs of adjacent panel units 16 into contiguity with the adjacent frame members 32 abutting each other so that the respective ribs 42 and 44 meet in edge-to-edge relationship, while the web portions 46 of the reinforcing frames remain slightly separated to provide voids therebetween. At vertically spaced regions along the marginal ribs 42 and 44, pairs of transversely registering notches 54 are provided and these notches, when the frame members are in contiguity, define therebetween horizontal channel voids 55 which are adapted to receive therethrough the tie rods proper of the tie rod and anchor bolt combinations 40. A horizontal slot 56 is formed in each web portion 46 at the horizontal level of each pair of notches 54 and is adapted to receive therethrough the bolts of conventional T-bolt and wedge assemblies 60 whereby the vertical frame members 32 may be drawn tightly together. The horizontal frame members 34 are substantially identical with the vertical frame members 32 and, to avoid needless repetition of description, similar characters of reference have been applied to the corresponding parts of both frame member disclosures as they appear in FIG. 2.

It is to be observed that the conventional T-bolt and wedge assemblies 60 which hold the various panel units 16 together in the composite gang form section 14 are disposed in and about alternate mating pairs of slots 56 in the various vertical frame members, or at least in certain selected pairs of registering slots, while other alternate pairs of slots 56 are devoid of any fastening devices Whatsoever. These latter slots are adapted to be employed in combination with the tie rod and anchor bolt combinations of the present invention for connecting the opposite ends of the tie rods 40 to the form assemblies 18 and 20 when the gang form section 14 is hoisted into position in the wall form.

As best shown in FIG. 8, each T-bolt and wedge assembly 60 consists of a T-bolt 62 and a wedge 64, the bolt being in the form of a flat steel plate or stamping of generally T-shape in plan view and having a body or shank portion 66 of elongated design and a T-head 68 at one end of the shank portion providing shoulders 70 for engagement with the web portion 46 of the associated vertical frame member 32 when the shank portion 66 is passed through the rectangular slot 56 in the web portion. The outer or distal end region of the shank portion 66 is tapered to facilitate insertion of the shank portion through the slot 56. The shank portion 66 is formed with an elongated longitudinally extending slot 74 therethrough for reception of the wedge 64, the latter being in the form of a fiat steel stamping. When the shank portion 66 is passed through a pair of the registering slots 56 in adjacent vertical frame members 32, and the wedge 64 is inserted through the slot 74, one straight edge or side of the wedge bears against one of the web portions 46 of the adjacent vertical frame member 32 and this side, in combination with the shoulders 70, serves to draw the two abutting Vertical frame members 32 together in the usual manner of installation of such T-bolt and wedge assemblies 60'.

In order to stiffen the gang form section 14 as a whole and enable it to be handled by the overhead hoist 10, conventional walers 80 may be applied to the rear side of the gang form section 14 and secured in position by suitable fastening means as, for example, waler clamping devices of the type shown and described in United States Patent No. 2,964,294, granted on December 13, 1960 and 6 entitled Waler Clamp for Concrete Wall Form. Addi-' tionally, if desired, waler liners 82 may be applied to the walers by conventional U-bolt clamping assemblies 84 for waler alignment purposes.

Assuming now that the gang form section 14 has been hoisted into place in the wall form assembly, the various slots 56 which are not used in the preparation of the gang form section are now employed for tie rod anchoring purposes. Toward this end, the tie rod and anchor bolt combinations 40 are employed to fasten the gang form in its proper position.

Each tie rod and anchor bolt combination 40 comprises a tie rod and an anchor bolt 102. The tie rod 100 is in the form of an elongated section of rod stock, the end regions 103 of'which are of an undulating or sinuous character and, as viewed in FIG. 7, each end region presents an inner inverted U-shape bend 104 and an outer upright U-shape bend 106. The extreme end regions of the tie rod 102 extend vertically as indicated at 108 and each constitutes a pivot axis for the associated anchor bolt 102, as will be described presently. Flattened frangible break-back portions 110 facilitate removal of the projecting end regions of each tie rod 100 after the poured concrete has hardened as is well known in the art. The notches 54 in the marginal ribs 42 and 44 afford clearance regions for the tie rods to pass through the mating vertical frame members 32 and the length of the portions of the tie rods that are outwardly of the break-back portions 108 is somewhat longer than is customary in connection with conventional tie rods to enable the undulatory end regions 103 to assume their outwardly spaced positions in the concrete form assembly so that they are available for break-off purposes prior to stripping of the gang form section 14 from the hardened concrete wall.

The anchor bolt 102 of each combination 40 is in the form of an approximately flat steel plate of generally rectangular design and having a body portion 112 from which there extends laterally from one corner region thereof a bolt section proper 114. On the same side of the anchor bolt 102 there also extends laterally a series of anchor fingers including an outer finger 116, an inner finger 118, and an intermediate finger 120. The outer finger 116 constitutes an anchor lug and pivot finger and it is formed with a hole 122 therethrough for reception of one end region 108 of the associated tie rod 100. The intermediate finger constitutes a saddle for reception thereover of the inverted U-shape bend 104. The inner finger 118 constitutes an inverted seat for the tie rod at the regions where the undulatory end region 103 thereof joins the straight medial section of the tie rod. The region of the anchor bolt between the inner finger 118 and the bolt section proper 114 is provided with a notch 123 for clearance purposes as will be described subsequently. The bolt section proper 114 of the anchor bolt is provided with the usual wedge-receiving slot 124 and is adapted to, receive therethrough a conventional wedge 126.

Returning again to a consideration of gang form section placement in the form assembly, after the gang form section 14 has been brought into operative position in the form assembly, a tie rod and anchor bolt combination 40 may be applied to a pair of adjacent panel units 16 on one side of the form in several different ways. One convenient way is to insert the end region 108 of the tie rod through the hole 122 in the finger 116 so that the bolt may hang on the end of the tie rod during initial placement of the tie rod in position. This placement of the tie rod may be effected by threading the tie rod through the associated channel void 55. When the tie rod is in the approximate position which it assumes in the installation, the anchor bolt 102 may then be swung horizontally about the vertical axis of the end region 108 of the tie rod 100 and the end of the bolt section proper 114 caused to enter the registering slots 56 as shown in FIG. 4. It is to be noted at this point that the bolt section prop-er 114 is curved on a relatively long radius, i.e., on a radius emanat:

ing from, or the center of which is coincident with, the

center of the hole 122. This enables the anchor bolt 102 to be swung about the axis of the upturned extreme end region 108 of the tie rod 100 and facilitates smooth entry of the bolt section proper H4 into the slots 56. After the bolt section proper 114 has passed through both slots 56, a wedge 126 is driven through the slot 124 and this wedge, when driven to its home position, serves to clamp the two adjacent vertical frame members 32 together.

When concrete pouring operations have been completed and the concrete has become set, the gang form section 14 may be substantially freed from its bond with the hardened concrete merely by knocking out the anchor bolts 102 of the combinations 4%). Removal of each anchor bolt may be effected by the simple expedient of knocking out the wedge 126 and thereafter directing an impact blow against the distal projecting end of the bolt section proper 114. Upon such impact, the anchor bolt 102, as a whole, will pivot about the upturned extreme end region 108 of the tie rod 100 and come to rest in a hanging captured position on the adjacent end of the tie rod, after which it may be removed manually from the tie rod. With the anchor bolt 102 removed, the associated tie rod end is free and hence it may be twisted or bent back and forth relatively to the embedded body portion thereof to effect the break-back in the usual manner of operations. Such anchor bolt removal and tie rod twisting operations will ordinarily serve to effect a certain amount of fracturing of any seepage concrete which may have entered the associated channel void 55 so that the gang form section 14 may readily be stripped from the hardened concrete mass by the application of a moderate amount of stripping force. The conventional bolt and wedge assemblies 60 remain in position and serve to hold the panel units 16 of the gang form section 14 together during both the applying and the stripping of the gang form section 14 to and from the installation, respectively.

The invention is not to be limited to the exact arrange ment of parts shown in the accompanying drawings or described in this specification as various changes in the details of construction may be resorted to without departing from the spirit or scope of the invention. Therefore, only insofar as the invention has particularly been pointed out in the accompanying claims is the same to be limited.

Having thus described the invention, what We claim as new and desire to secure by Letters Patent is:

1. In a concrete wall form installation, the combination with an erected concrete wall form including a pair of prefabricated panel units having marginal frame mem bers disposed in abutting edge-to-edge relationship, there being a pair of aligned slots in said abutting frame members, and means in the vicinity of said slots defining a void between said frame members, of a tie rod and anchor bolt combination for operatively connecting said panel units to a pair of similar oppositely disposed panel units in the installation, said tie rod and anchor bolt assembly comprising a tie rod having an upturned end and a frangible break-back spaced inwardly from said upturned end a distance appreciably greater than the overall transverse width of said panel units including said marginal frame members, and an anchor bolt in the form of a substantially flat horizontally disposed plate having a body portion from which there extends laterally from one edge thereof a bolt portion proper, there being a hole in said plate spaced outwardly from the bolt portion proper, said bolt portion proper projecting through the aligned slots in said marginal frame members, and a wedge passing through the slot in said bolt portion proper and bearing against a face of one of said marginal frame members and serving to clamp the other frame member against the body portion, said body portion extending alongside said other frame member and said hole being spaced outwardly from said marginal frame members, said tie rod projecting between said frame members and through said void and having its upturned end projecting upwardly throughsaid hole whereby the tie rod is pivotally connected to the bolt for swinging movement of the bolt with respect to the tie rod in its own horizontal plane.

2. In a concrete wall form installation, the combination set forth in claim 1 and wherein said bolt portion proper is of arcuate configuration on a radius emanating from the center of said hole.

3. In a concrete wall form installation, the combination with an erected concrete wall form including a pair of prefabricated panel units having marginal frame members disposed in abutting edge-to-edge relationship, there being a pair of aligned slots in said abutting frame members, and means in the vicinity of said slots defining a void between said frame members, of a tie rod and anchor bolt combination for operatively connecting said panel units to a pair of similar oppositely disposed panel units in the installation, said tie rod and anchor bolt assembly comprising a tie rod having an undulatory end region terminating in an upturned end, and a frangible break-back spaced inwardly from said upturned end a distance appreciably greater than the overall transverse width of said panel units including said marginal frame members, and an anchor bolt in the form of a substantially flat horizontally disposed plate from which there extend laterally and in the same direction from one edge thereof a bolt portion proper, an anchor lug, and an intermediate saddle,

, there being a hole in said anchor lug, said bolt portion proper projecting through the aligned slots in said marginal frame members, and a wedge passing through the slot in said bolt portion proper and bearing against a face of one of said marginal frame members and serving to clamp the other frame member against the body portion, said body portion extending alongside said other frame member, said tie rod projecting between said frame members and through said void and having the upturned end of said undulatory portion projecting upwardly through said hole whereby the tie rod is pivotally connected to the bolt for swinging movement of the bolt with respect to the tie rod in its own horizontal plane, said intermediate saddle engaging said undulatory end region of the tie rod and serving to prevent axial shifting of the tie rod.

4. In a concrete wall form installation, the combination set forth in claim 3 and wherein said bolt portion proper is of arcuate configlration on a radius emanating from the center of said hole.

5. In a concrete wall form installation, the combination with an erected concrete wall form including a pair of prefabricated panel units having marginal frame members disposed in abutting edge-to-edge relationship, there being a pair of aligned slots in said abutting frame members, and means in the vicinity of said slots defining a void between said frame members, of a tie rod and anchor bolt combination for operatively connecting said panel units to a pair of similar oppositely disposed panel units in the installation, said tie rod and anchor bolt assembly comprising a tie rod having an undulatory end region having an upwardly and a downwardly facing bend respectively, and a frangible break-back spaced inwardly from said end a distance appreciably greater than the overall transverse width of said panel units including said marginal frame members, and an anchor bolt in the form of a substantially flat horizontally disposed plate from which there extend laterally and in the same direction from one edge thereof four protuberances including a bolt portion proper, a saddle, an inverted seat and an anchor lug, there being a slot in said bolt portion proper and a hole in said anchor lug, said bolt portion proper projecting through the aligned slots in said marginal frame members, and a wedge pass ing through the slot in said bolt portion proper and bearing against a face of one of said marginal frame members and serving to clamp the other frame member against said body portion, said body portion extending alongside said other frame member, said tie rod projecting between said frame members and through said void and having the up turned end of said undulatory portion projecting upward- 1y through said hole whereby the tie rod is pivotally connected to the bolt for swinging movement of the bolt with respect to the tie rod in its own horizontal plane, said saddle underlying said downwardly facing bend, said inverted seat overlying said upwardly facing bend.

6. In a concrete wall form installation, the combination set forth in claim 5 and wherein said bolt portion proper is of arcuate configuration on a radius emanating from the center of said hole.

7. In a concrete wall form installation, the combination set forth in claim 5 and wherein said bolt portion proper is of arcuate configuration on a radius emanating from 10 the center of said hole, and wherein the bolt portion proper, the saddle, the inverted seat, and the anchor lug are disposed along said one edge of the plate in the order named and with the bolt portion proper being disposed adjacent to the inner end of the plate.

References Cited in the file of this patent UNITED STATES PATENTS 1,549,632 Trester Aug. 11, 1925 2,702,420 Williams Feb. 22, 1955 2,967,689 Jahn Jan. 10, 1961 3,067,479 Schimmel Dec. 11, 1962 

1. IN A CONCRETE WALL FORM INSTALLATION, THE COMBINATION WITH AN ERECTED CONCRETE WALL FORM INCLUDING A PAIR OF PREFABRICATED PANEL UNITS HAVING MARGINAL FRAME MEMBERS DISPOSED IN ABUTTING EDGE-TO-EDGE RELATIONSHIP, THERE BEING A PAIR OF ALIGNED SLOTS IN SAID ABUTTING FRAME MEMBERS, AND MEANS IN THE VICINITY OF SAID SLOTS DEFINING A VOID BETWEEN SAID FRAME MEMBERS, OF A TIE ROD AND ANCHOR BOLT COMBINATION FOR OPERATIVELY CONNECTING SAID PANEL UNITS TO A PAIR OF SIMILAR OPPOSITELY DISPOSED PANEL UNITS IN THE INSTALLATION, SAID TIE ROD AND ANCHOR BOLT ASSEMBLY COMPRISING A TIE ROD HAVING AN UPTURNED END AND A FRANGIBLE BREAK-BACK SPACED INWARDLY FROM SAID UPTURNED END A DISTANCE APPRECIABLY GREATER THAN THE OVERALL TRANSVERSE WIDTH OF SAID PANEL UNITS INCLUDING SAID MARGINAL FRAME MEMBERS, AND AN ANCHOR BOLT IN THE FORM OF A SUBSTANTIALLY FLAT HORIZONTALLY DISPOSED PLATE HAVING A BODY PORTION FROM WHICH THERE EXTENDS LATERALLY FROM ONE EDGE THEREOF A BOLT PORTION PROPER, THERE BEING A HOLE IN SAID PLATE SPACED OUTWARDLY FROM THE BOLT PORTION PROPER,SAID BOLT PORTION PROPER PROJECTING THROUGH THE ALIGNED SLOTS IN SAID MARGINAL FRAME MEMBERS, AND A WEDGE PASSING THROUGH THE SLOT IN SAID BOLT PORTION PROPER AND BEARING AGAINST A FACE OF ONE OF SAID MARGINAL FRAME MEMBERS AND SERVING TO CLAMP THE OTHER FRAME MEMBER AGAINST THE BODY PORTION, SAID BODY PORTION EXTENDING ALONGSIDE SAID OTHER FRAME MEMBER AND SAID HOLE BEING SPACED OUTWARDLY FROM SAID MARGINAL FRAME MEMBERS, SAID TIE ROD PROJECTING BETWEEN SAID FRAME MEMBERS AND THROUGH SAID VOID AND HAVING ITS UPTURNED END PROJECTING UPWARDLY THROUGH SAID HOLE WHEREBY THE TIE ROD IS PIVOTALLY CONNECTED TO THE BOLT FOR SWINGING MOVEMENT OF THE BOLT WITH RESPECT TO THE TIE ROD IN ITS OWN HORIZONTAL PLANE. 